@Sebastian-Roth Yeah, this isn’t something readily available in the code.
@endia If you’re at least semi familiar with code, you might look into /var/www/fog/lib/fog/bootmenu.class.php
This isn’t currently coded for, but you might even be able to do what you want using a simple (relatively speaking) hook to alter the boot menu system.
There’s a template hook already created that should help get you started. By creating a hook, you aren’t altering the core code within FOG. Hooks are meant as a means to inject custom data specifically around what you’re requesting to happen.
The hook that’s setup is located in /var/www/fog/lib/hooks/bootitem.hook.php
Ultimately what you would do is make your changes and set the active flag to true. (it’s a variable named active)